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Mesoscale Discussion 203
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   MESOSCALE DISCUSSION 0203
   NWS STORM PREDICTION CENTER NORMAN OK
   0319 PM CDT SUN MAR 13 2016

   AREAS AFFECTED...ERN OK/AR

   CONCERNING...TORNADO WATCH 41...42...

   VALID 132019Z - 132145Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 41...42...CONTINUES.

   SUMMARY...THUNDERSTORMS WILL INCREASE IN AREAL COVERAGE...ARCING
   FROM ECNTRL OK INTO SWRN AR OVER THE NEXT FEW HOURS.  LARGE HAIL AND
   ISOLATED TORNADOES ARE EXPECTED.

   DISCUSSION...CONVECTION CONTINUES TO INCREASE WITHIN EXIT REGION OF
   MID-LEVEL SPEED MAX...IMMEDIATELY AHEAD OF SFC LOW ALONG NOSE OF DRY
   SLOT.  SUPERCELLS ARE GRADUALLY MATURING ALONG AN ARCING BAND OF SCT
   TSTMS FROM PITTSBURG COUNTY OK...LE FLORE COUNTY OK...SEWD INTO
   SEVIER COUNTY AR.  LATEST VIS IMAGERY EXHIBITS AN EXPANDING CU FIELD
   TRAILING THESE STORMS INTO THE ARKLATEX AND LIGHTNING SHOULD DEVELOP
   WITH STRONGER UPDRAFTS OVER THE NEXT FEW HOURS TOWARD THE LA BORDER.
   VERY STRONG SHEAR SUPPORTS ORGANIZED ROTATING UPDRAFTS AND
   SUPERCELLS ARE EXPECTED TO INCREASE ACROSS SRN/CNTRL AR INTO THE
   LATE AFTERNOON HOURS.

   ..DARROW.. 03/13/2016


   ATTN...WFO...JAN...LZK...SHV...TSA...OUN...

   LAT...LON   35759668 35449442 35179442 35179119 32889109 32899421
               34279431 34589667 35759668 

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Page last modified: March 13, 2016
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